Disposable diapers
CA 2119659 C · Owner: Uni-Charm Corporation · Inventors: Sasaki, Tohru; Numano, Kazuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable diaper including front and rear bodies provided with an elasticity exerted toward the waist line wherein elastic members are attached to a backsheet of a disposable diaper around first and second leg-openings so that a first elastic member provided around a first leg-opening further extend along a curved course into the front and rear bodies and terminates at one side edge of front and rear bodies while a second elastic member provided around a second leg-opening further extend along the curved course into the front and rear bodies and terminates at the other side edge of the front and rear bodies. The respective elastic members comprise a plurality of rubber-like elastic …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 23, 1994 and granted July 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.